<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>内容</title>
</head>
<body>
<form action="/login" method="post">
  <input type="text" name="username"/>
  <input type="password" name="password"/>
  <input type="submit" value="提交"/>
</form>

</body>
</html>
